CLEANSPEED Drivetrain Ricky Wester

Agenda Project Goals Project Constraints Overall Design Breakdown of Parts Conclusion

Project Goals RWD Package – Increase traction – Lightweight Deadlines – June 1, 2012:Parts Spec’d – July 1, 2012: Orders Complete – September 1, 2012: Parts Arrival

Constraints Budget: ? Rules – Any transmission and drivetrain may be used. Geometry Constraints – Differential mounting to frame – Location of upright and rear hub

Overall Design Rear Wheel Drive – Chain driven torque bias differential – Tripod hollowed out half-shafts – Aluminum hubs w/ integrated tripod housing and floating brake rotor *Part Drawing from RCV Performance, Picture from Taylor Race Engineering

The Goods Tripod Steel Axle Kits ($1,100) – 4485 – Quaife 27 Tooth Honda 1.17 lbs (2) – 4672-TA – Inner Tripod joint.33 lbs (2) – 5278-TA – Outer Tripod joint.32 lbs (2) – ½” Bored Half-Shaft – By Length ~1.5 lbs (2) – – Tripod Boot (4) *Parts drawing and prices from RCV Performance FSAE Catalog

The Goods *Parts drawing and prices from RCV Performance FSAE Catalog

The Goods Front Hub Assemblies ($1,250) – 5116 – Front Hub.55 lbs (2) – 5124 – Titanium Wheel studs.03 lbs (8) – 5117 – Hub Nut.05 lbs (2) – 5108-RA – Floating 10” Rotor.95 lbs (2) – 5109 – Rotor Floater.27 lbs (2) – 5141 – Rotor Pin.01 lbs (12) – McMaster: 97633A180 – Rotor Pin Snap Ring (12) – Timken – Bearing.35 lbs (2) – Timken – Race (2) *Parts drawing and prices from RCV Performance FSAE Catalog

The Goods *Parts drawing and prices from RCV Performance FSAE Catalog

The Goods Rear Hubs Assembly ($1,700) – 5231 – Rear Hub.75 lbs (2) – 5239 – Hub Nut.1 lbs (2) – 5124 – Titanium Wheel studs.03 lbs (8) – 5245 – Track Holder.01 lbs (2) – 5244 – Tripod Track.01 lbs (12) – C – Tripod Boot (2) – McMaster: 91251A435 – Holder Bolts (6) – 5284 – Floating 220 mm Rotor 1.29 lbs (2) – 5141 – Rotor Pin.01 lbs (12) – McMaster: 97633A180 – Rotor Pin Snap Ring (12) – Timken: L – Bearing.96 lbs (2) – Timken: L – Race (2) *Parts drawing and prices from RCV Performance FSAE Catalog

The Goods *Parts drawing and prices from RCV Performance FSAE Catalog

The Goods *Parts drawing and prices from RCV Performance FSAE Catalog Floating Brake Rotors

The Goods Taylor Race Engineering – Honda Torque Bias Differential – Sealed ($1,394) Part #: INV – Sealed Bearings ($47) Part #: INV – Chain Drive Sprocket ($50 - $100) Dependant on final drive ratio Custom Mounting Brackets – In – house est. $400 Total: $1,900

The Goods Quaife – Honda Torque Bias Differential Photo from Taylor Race Engineering website Photo from Quaife Engineering website

Conclusion Final Cost $5,650 + shipping Benefits – Lightweight FSAE proven – Off the shelf, stocked part = fast turn around time – Sealed differential with no added machining costs